Genetics

CHAPTER 11: Genetics
CH 11 Notes
CH 11 Video Resources


Terms


How to Solve a Genetic Problem

1. Read the Problem
2. List the Genotypes of the Parents
3. Form the Gametes (law of segregation)
4. Make a Punnett Square
5. List Genotypes of Offspring
6. List Phenotypes of Offspring

Genotype: An organism's actual gene combination, represented by letters ex. TT or tt or Tt
Dominant gene = Capital; Recessive gene = lowercase

Phenotype: An organism's appearance, due to its gene combination, what you actually see ex. TT = Tall; tt = short; Tt = Tall

Alleles: The alternate forms of a gene; different genes that control the same trail, ex. Height = TRAIT, Allele 1 = Tall, Allele 2 = Short

Homozygous (pure): When paired genes for a trait are the same, ex. TT or tt

Heterozygous (hybrid) : When paired genes for a trait are different, ex. Tt


Incomplete Dominance

Co-Dominance

Multiple Alleles

Sex Linked Traits